IPC Subgroup
H04N 5/76 Television signal recording
Introduced: September 1968
Last revised: January 2006
Full Title
Details of television systems > Television signal recording
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- PICTORIAL COMMUNICATION, e.g. TELEVISION
Related Keywords
RECORDING of television signalsTELEVISION signal recordingVIDEO RECORDING apparatus
9 direct subcodes
Child Classifications
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- H04N 5/761 Systems for programming the time at which predetermined television channels will be selected for recording
- H04N 5/765 Interface circuits between an apparatus for recording and another apparatus
- H04N 5/78 using magnetic recording
- H04N 5/8 using electrostatic recording
- H04N 5/84 using optical recording
- H04N 5/89 using holographic recording
- H04N 5/903 using variable electrical capacitive recording
- H04N 5/907 using static stores, e.g. storage tubes or semiconductor memories
- H04N 5/91 Television signal processing therefor
Top Applicants
Top 10 applicants by patent filingsfor class H04, 2013–2023, worldwide · Source: EPO PATSTAT
- QUALCOMM US 97,396
- HUAWEI TECHNOLOGIES COMPANY CN 96,502
- SAMSUNG ELECTRONICS COMPANY KR 86,981
- TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 55,869
- HUAWEI TECHNOLOGIES COMPANY 55,349
- LG ELECTRONICS KR 53,649
- CANON 33,341
- SONY CORPORATION JP 32,761
- ZTE CORPORATION CN 32,274
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION 28,327